#include<iostream>
#include<iomanip>
using namespace std;
int main()
{
    float a=0.00000678f,b=0.00000123f;
    double c=0.00000678,d=0.00000123,e=1000000000000000000000.0;
    a=a+111111.111f;
    b=b+111111.111f;
    c=c+111111.111;
    d=d+111111.111f;
    cout<<setiosflags(ios::fixed)<<setprecision(16);
    cout<<"a="<<a<<",b="<<b<<endl;
    cout<<"c="<<c<<",d="<<d<<endl;
    cout<<"e="<<e<<endl;
    return 0;
}
